Hi Paul, Do you suggest that I should send some sort of hidden INVITE at the beginning of the message session to establish a dialog?
Thanks, Wendy --- Paul Kyzivat <[EMAIL PROTECTED]> wrote: > Upaya, > > This is one of the reasons we are working on > session-mode IM. Use of the > MESSAGE message is page-mode IM. In page mode, there > is no session, so > in general the proxy will be involved in routing > each message. And if > the target has multiple UASs then each message may > be forked. Responses > are a bit of an issue as well - in general the best > you can do is > address a response to the From address in the > request. > > Technically you can send MESSAGE messages within a > dialog and so > guarantee a consistent pair of endpoints are > interacting, and generally > cut the proxy out as well. (I believe this is what > MS does.) But that is > not recommended behavior. And because MESSAGE is not > dialog establishing > you need to do something else to establish the > dialog, such as send a > media-less invite. > > While not yet complete, the direction we are > pursuing for session > oriented IM is to send an invite with an offer for a > message-session > media stream. And then send the IMs via that stream > rather than via > MESSAGE messages. The protocol for this is still in > progress, with the > working name of MSRP. (Message Session Relay > Protocol.) > > Paul > > Upaya wrote: > > Thank you and Smith for the reply on my previous > > message. > > > > I have a question regarding an IM conversation. > > Similar to MSN Messenger and Yahoo Messenger, > users > > can exchange messages in one session/window. > > > > For example: A Short Conversation > > > > > >>John wrote: Hi Mary! > >>Mary wrote: Hello John > >>John wrote: How are you? > > > > > > Based on RFC3428, John sends the first message to > the > > proxy server, then the proxy server forwards the > > message to Mary. > > > > What about the second and the third message? Does > it > > still need the proxy server to perform lookup and > > forward? Also, all three messages above should be > in > > the same session, right? > > > > Thanks, > > > > Wendy > > > > > > > > __________________________________ > > Do you Yahoo!? > > Yahoo! Search - Find what you抮e looking for > faster > > http://search.yahoo.com > > _______________________________________________ > > Sip-implementors mailing list > > [EMAIL PROTECTED] > > > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > > > __________________________________ Do you Yahoo!? Yahoo! Finance Tax Center - File online. File on time. http://taxes.yahoo.com/filing.html _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
